It looks like Nokia might be announcing a large screen Lumia device with Windows Phone 8 very soon.
According to a Chinese website (via GSM Insider), Nokia is likely to announce the Lumia 625, a mid-range Windows Phone 8 smartphone that will feature a 4.7-inch display with a resolution of 480x800 pixels. The phone is expected to be powered by a Qualcomm MSM8960 Snapdragon S4 chipset with dual-core processor.